filling aluminum extrusion with plastic | |
I'm looking for a plastic resin or something that can be poured into an aluminum extrusion, say a 4" x 6" tube that is approx. 200" long. Once it hardens it needs to be removed, thus leaving a mold of the inside of the extrusion. These need to be fairly flexible and tough enough to be reinserted time and time again into more of the same extrusions for stretchforming. Right now we are using sheets of ldpe plastic cut to shape and size on tablesaw. There's gotta be a cheaper, easier way. |